1. Jacobson, E.: The Self and the Object World. New York: Int'l. Univ. Press, 1964.
2. Escalona, S.: Patterns of Infantile Experience and the Developmental Process. In: Psychoanal. Study of Child. New York: Int'l. Univ. Press, 18: 197–244, 1963.
3. Ibid.,.
4. Freud, A.: The Concept of Developmental Lines. In: Psychoanal. Study of Child. New York: Int'l. Univ. Press, 18: 245–265, 1963.
5. Erikson, E.: Childhood and Society. New York: W. W. Norton, 1950.